AbstractThe aim of the study was to examine the relation between estimated fluidintake and real fluidintake among dialysis patients. The data were collected through study specific questionnaire and data from the medical record. Patients attached to eleven Swedish dialysis units were asked to participate. The number of patients that fulfilled the inclusion criteria were 222 persons of whom145 (65%) chose to participate in the study. The dialysis patients estimated their fluid intake for a day in average 9,06 deciliter. The dialysis patients real fluid intake for a day were in average 10,34 deciliter. The results showed that 58% of the dialysis patients that participated in the study had an estimated fluid intake less than what they actually consumed. The relation between estimated fluid intake and real fluid intake was r=0,288, which showed a fairly poor relation.